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140度以下生成磺酸酯,140度生成乙醚,170度生成乙烯,還可能有炭黑,二氧化硫,二氧化碳等副產物
在有機反應中,如乙醇脫水制乙烯的反應,苯的硝化反應,蔗糖的脫水等,濃硫酸的作用為脫水劑和催化劑.在酯化反應中為吸水劑和催化劑.
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